Dyes And Pigments Intermediates CAS NO. 5434-21-9 / P-Aminophthalic Acid

Product description


Product Description




Delivery Time:As per customer’s requirement
Certification:ISO9001, ISO14001

Used as dyestuff Intermediates


Specifications:























Product name



P-Aminophthalic acid



CAS No.



5434-21-9



Appearance



Grayish crystalline powder



Assay (HPLC) 


Impurity (as 3-isomer)


Total assay(4-APA plus 3-APA)



4-APA≥90%


3-APA: 0~10%


≥98%



Melting point



342-345℃



Loss on drying



≤0.3%



Ignition Residue



≤0.5%



Heavy metals



≤20ppm



Iron 



≤50ppm



Sodium



≤2000ppm



Description:


P-Aminophthalic acid, 98%MIN


CAS No.: 5434-21-9


EINECS No.: 226-596-4


Molecular formula: C8H7NO4


Molecular Weight: 181.15


Structural formula:


Synonyms: 4-APA,4-Aminophthalic acid


Appearance: Grayish crystalline powder


Applications:


Medicine, dyestuff and pharmaceutical intermediates.


Competitive Advantage:


1. We are the largest manufacturer of P-Aminophthalic acid in China with more than 


12 years of production and export history.


2. Based on our years of experience in this field, we take pleasure in bringing you our 


high quality and consistency products with very competitive price, prompt delivery, and


 very quick response service.


3. Our company has the self-support export and import authority and our factory is inspected 


by our valuable and honored customers.



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Changzhou Welton Chemical Co., Ltd

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